What’s Vulnerable › Vulnerabilities
CVE-2021-26100
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-07-09 · updated 2026-06-17
- Weakness: CWE-347
Description
A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who intercepts the encrypted messages to manipulate them in such a way that makes the tampering and the recovery of the plaintexts possible.
Affected products
- Fortinet FortiMail: before 7.0.0 — fixed in 7.0.0
How to fix
Upgrade to a fixed version: Fortinet FortiMail 7.0.0. Check the vendor advisory for mitigations.
References
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